Like many older artwork sets, no art was created for a headpiece for this set. Nor does art exist for a belt of this colour variant (which is less common), though art was created for some of the "Outland" colour variants that were created later in the Burning Crusade (see the list at the end). If they had created one it'd probably look like Redeemed Soul Cinch (which uses the art of the "Outland Purple" variant) but in the grey-blue of this set. Just choose whatever you think goes well as there are no perfect matches.

There's a staggering eight other colour variants of this artwork and seven of them are available as sets in the game (though not always complete). See: